MBSS Site Summary for: PATL-209-X-2011

Site Photos

Field photo showing stream conditions at site PATL-209-X-2011-1 (Opens in a new window) Field photo showing stream conditions at site PATL-209-X-2011-2 (Opens in a new window)

Located on DOGWOOD RUN in the Patapsco River L N Br watershed, 8-digit code: 02130906.
This stream was visited in the spring on 3/17/2011 and again in the summer on 6/14/2011.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Good - 4.3 / 5.0
Benthic IBI Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 4,464 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 24.6 %
Agricultural Land Use 36.7 %
Forested Land Use 37.8 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 17/20 (Optimal)
Pool Quality
Pool Extent = 53 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 41 meters 		17/20 (Optimal)
Shading 70 %
Embeddedness 40 %
Several measures of instream habitat were considered 'Optimal' at this location.


Stream Water Quality:
pH (lab) 7.815
Alkalinity
(acid neutralizing capacity) 		1490.5 µeq/L
Dissolved organic carbon (DOC) 2.5768 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 21 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blue Ridge Sculpin 230
Longnose Dace 101
Cutlip Minnow 36
Redbreast Sunfish 26
River Chub 24
American Eel 20
Bluntnose Minnow 17
Northern Hogsucker 14
White Sucker 11
Satinfin Shiner 9
Swallowtail Shiner 9
Bluegill 6
Central Stoneroller 6
Creek Chub 6
Rock Bass 6
Blacknose Dace 4
Margined Madtom 3
Smallmouth Bass 2
Common Shiner 1
Largemouth Bass 1
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Snapping Turtle
Northern Water Snake

Crayfish:
Orconectes virilis

Exotic Plants:
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Oriental Bittersweet
Privet
Wineberry
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Orthocladius Non-Biting Midges 24
Cheumatopsyche Net-Spinning Caddisfly 19
EPHEMERELLIDAE Spiny Crawler Mayfly 19
Hydropsyche Net-Spinning Caddisfly 10
Sympotthastia Non-Biting Midges 6
Oulimnius Riffle Beetle 4
Isonychia Slate Drake Mayfly 4
Hydrobaenus Midge 4
Clinocera Aquatic Dance Fly 4
Antocha Crane Fly 4
Neophylax Caddisfly 3
Parametriocnemus Non-Biting Midges 3
Orthocladiinae Midge 2
Chimarra Fingernet Caddisfly 2
Thienemanniella Non-Biting Midges 2
Amphinemura Spring Stonefly 2
Prostoia Spring Stonefly 2
Ephemerella Sulphur Mayfly 1
Caecidotea Isopod 1
Glossosoma Little Black Caddisfly 1
Maccaffertium March Brown And Cahill Mayfly 1
GOMPHIDAE Clubtail Dragonfly 1
Ameletus Combmouthed Minnow Mayfly 1
Prosimulium Black Fly 1
Stegopterna Black Fly 1
Polypedilum Non-Biting Midges 1
Potthastia Non-Biting Midges 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.